Machine for molding concrete bodies.



PATENTED SEPT. 2, 1905.l

J. B. lCORYELL. MACHINE FOR MOLDING CONCRETE BCDIES.

2 SHEETS-SHEET 1` APPLICATION FILED DEG. 21,1904.

WIM/5555;

l N Q. 800,138.

PATENTED SEPT. y26,

v J. B. CORYELL. MACHINE FOR MOLDING CONCRETE BODIES.

APPLICATION I-ILED DEC. 211904.

2 SH ETS-SHEET 2.

F/G. s

UNITED sTATEs rPATENT oEEIoE. JOHN B. CORYELL, OF ADRIAN,.M1CH1GAN.

MACHlNE FOR MOLDING CONCRETE BODIES- Specification of Letters Patent.

`Patented. Sept. 26, 1905.

Application filed December 21, 1904. Serial No. 237,747.

To 1Q-ZZ whom tm/ay concern..-

Be it known that I, JOHN B. CoRYnLL, a citizen of the United States, and a resident of lAdrian, in the county of Lenawee and State' of Michigan, have invented certain new and useful Improvements in Machines for Molding Concrete Bodies; and 1 do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and to the iigures of reference marked thereon, which form a part of this specification.

My invention relates to machines for molding concrete building-blocks, and has for its object the provision of a machine of this class that is simple, reliable, and effective in its operation and constructed with an end in view to the formation of a block comprising two spaced slabs or members that are united by metal rods or like means formed integral with their mass during the molding process thereof.

The invention is fully described in the following speciiication and shown in the accompanying drawings, in which Figure 1 is an end elevation of my invention, showing the parts in position for the formation of a block.- Figs. 2 and 3 are top and side views, respectively, thereof; and Fig. 4 :is a cross-section of the movable core, taken on 'a line w w in Fig. 2.

Referring to the drawings, 1 represents the supporting frame or standard of my machine, the same being1 of any suitable construction adapted to support the operative parts of the machine.

A horizontal bed-plate 2 rigidly connects the upper ends4 of the supports 1 and is provided throughout its length with a centrallydisposed opening 3, through yvhich the core4 is adapted to `have a lvertical movement. Mounted at the upper portion of the frame 1 are the movable lplates 5 and 6, forming the.

sides and ends, respectively, of the mold. Each plate is formed with the downwardlyextending arms 7 which are pivoted or'hinged in suitable manner to the vertically-aiming lugs 8, formed on the frame 1, as shown, thus enabling the four sides of the mold to be separately swung outwardly to permit the removal of a formed block. The inner vertical edges of the side plates 5 are grooved or rabbeted, as shown in Fig. 2, to form aseat for the edges of the end plates 6 and to prevent the inward collapse of the ends and sides when ,in set-up position. The four sides are adapted to be locked in closed position by the bars 9, each of which is pivoted at one end to the end of a side plate and has its free end provided with a notch to lock over and engage a similar notch provided in a linger 10, that Aprofects from the end of the opposite side plate, as shown in the drawings.v A removable bottom plate 11 is mounted on the bedplate 2 and provided with a central longitudinal opening 12 of a size sufcient to permit a vertical reciprocatory movement of the core 4 therein.

The core 4 extends the entire width of the machine, thus dividing the mold into two distinct compartments, and comprises a hollow or shell-like body having its top, sides, and ends closed and its bottom open, as shown in Fig. 4. rI he ends ofthe core are vertically grooved toreceive the leaders 13, that are secured to the inner sides of the frame-supports 1,`and the end plates 6 of the mold and by which the core is guided'in its vertical movement. Mounted in suitable bearings provided in the -lower portion of the standards 1 in substantial vertical alinement with the core 4- is a shaft 14,v which has one end extended to receive the operating-lever 15. A vertical reciprocatory movement is communicated to the core 4 from an oscillatory movement of the shaft 14 and lever 15 through the medium of the pivotally-jointed toggle-arms 16 and 17,

` the former being keyed to the shaft 14 and the lattery being pivoted to the lugs 1,8, that are'formed on the under side of the core 4..

To adapt'the core 4 to the formation of an articial block comprising two slabs spaced apart and rigidly connected by metal rods 19 or like means that are embedded in the concrete during .the forming process, I provide a series of transversely-disposed slots 20 in said core. These slots extend to a depth in the core equalI to the depth in a block at which it is desired to place the lower row of connecting-rods 19, as shown by dotted lines in Fig. 3, and may be formed at any desired angle to the sides of the core, depending upon the position at which it is desired to position the'rods.

The constructing of the core 4 as shown enables the concrete that is forced through the slots 2O during the 'tamping operation to fall down through the core to the iioor and enables the core to be lowered from a freshlymade block without danger of cracking the same or displacing the rods.

The operation of my machine is as follows: Preparatoryv to forming a block the movable side and end plates 5 and 6 are raised and locked to form a rectangular molding-body, the removable plate 11 positioned to form the bottom thereof, and the core 4 thrown up within said body by a manipulation of the lever 15, thus dividing the same into two compartments, as shown in Figs. 1, 2, and 3 of the drawings. The concrete or other suitable material is then deposited in the two compartments to a depth at which it is desired to place the first row of'rods 19 or other connecting means and lirmly tamped therein. A rod is then positioned within each of the slots 20 with its extremities resting upon the concrete and another layer of concrete placed in the mold and tamped, as before, thus embedding the ends of the connecting-rods in the block being formed. This is repeated until a block having the desired number of connecting-rods and of the required depth is formed. The lever 15 is then moved in the proper direction to cause the core 1 to be lowered out of contact with the block, as shown in dotted lines in Fig. 1, after which the side and end plates of the mold are unlocked and swung outwardly from the newly-made block, thus leaving it free to be removed from the machine. The removable bottom plate 11 enables the block to be easily raised and carried from the machine. Another bottom plate is then placed on the machine and the operation repeated to make another block..

Itis obvious that such changes in the form, proportion, and minor details of construction and arrangement of-the parts as fairly fall within the scope of my invention may be made without departing from the spirit or sacrificing any of the advantages thereof.

Having thus described my invention, what I claim as new, and desire to obtain by Letters Patent, is-

1. 1n a machine of the class described, the combination with the molding-chamber, of a core vertically movable in said chamber adapted when raised therein to divide said cham ber into two independent molding-compartments disposed slots for receiving uniting-rods for the independently-molded bodies, said slots extending only a portion of the depth ol the core.

2. In a machine for molding spaced slabs,

' the combination with a molding-chamber having an opening` through its bottom extending the length thereof, of a hollow core vertically movable in said opening and adapted when raised to divide the molding-ehamber into two spaced compartments, said core having its under side open and communicating without the molding-chamber and its upper portion vertically slotted to receive tying members for uniting the slabs being molded.

3. In a machine of the class described, the combination with a molding-chamber having movable sides and an opening' in its betteln, of a hollow core vertically movable in said opening and having its bottom open without said chamber and its upper portion transversely slotted to receive connecting-rods for uniting the blocks formed on opposite sides of the core, a shaft mounted below said core, and toggle-arms connecting' said shaft and core whereby an oscillatory movement ol said shaft is adapted to impart a. reciproeatory movement to said core.

4. In a machine of the class described, the combination of a supporting-frame` a mold mounted on said frame and comprising movable side and end plates hinged to said frame, a removable bottom plate having' an opening therethrough, and means for locking theside and end plates in closed position, a hollow core movable through the opening in said bottom plate and within the mold and provided with vertical transverse slots and having its ybottom open without the molding-chamber,

and means for reciprocating said core, su bstantially as described.

In testimony whereof I have hereunto signed. my name to this specilication in the presence of two subscribing witnesses.

JOHN B. CORYELL.

Witnesses:

EARL C. MICHENER, CHARLES L. ROBERTSON. 

